Type: Cross Countersunk Self-Tapping Screw. ● Size: M5 - M8. ● Material:A4 Stainless Steel. Maximum Corrosion Resistance: Made from 316 Stainless Steel, which contains Molybdenum. This grants itfar superior resistance to corrosion than 304 stainless steel, effectively withstanding seawater, chemical solvents, chlorides, and various strong acids for maximum longevity.
eBay